A/B Test Calculator
Determine if your test results are statistically significant
Confidence threshold:
Control (A)
Variant (B)
How to use
- • Enter visitors and conversions for both your control and variant
- • A conversion can be any goal: click, sign-up, purchase, form submit, etc.
- • 95% confidence is the standard threshold in most marketing tests
- • If not significant, keep running the test — don't end it early
- • Uses a two-tailed Z-test for proportions
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